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Foreground object detection in projection display  

Kang Hyun (Dept. of Computer Engineering at Kyungpook National Univ.)
Lee Chang Woo (Dept. of Computer Engineering at Kyungpook National Univ.)
Park Min Ho (Computer Center at Kyungpook National Univ.)
Jung Keechul (College of Information Science at Soongsil Univ.)
Publication Information
Journal of the Institute of Electronics Engineers of Korea CI / v.41, no.1, 2004 , pp. 27-37 More about this Journal
Abstract
The detection of foreground objects in a projection display using color information can be hard due to changing lighting conditions and complex backgrounds. Accordingly, the current paper proposes a foreground object detection method using color information that is obtained from the input image to the Projector and an image captured by a camera above the projection display. After pixel correspondences between the two images are found by calibrating the geometry distortion and color distortion, the natural color variations are estimated for the projection display. Then, any pixel that has another variation not resulting from natural geometry or color distortion is considered a part of foreground objects, because a foreground object in a projection display changes the values of pixels. As shown by experimental results, the proposed foreground detection method is applicable to an interactive projection display system such as the DigitalDesk
Keywords
Human Computer Interface; DigitalDesk; Augmented Reality; Projection Display;
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